| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 10.67 | 196307071_CIN_LAN |
| Bob Friend | PIT | 8.25 | 196307100_HOU_PIT |
| Juan Marichal | SFN | 5.02 | 196307072_SLN_SFN |
| Warren Spahn | ATL | 3.77 | 196307070_ATL_HOU |
| Whitey Ford | NYA | 3.53 | 196307110_NYA_ANA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Jay Hook | NYN | -11.07 | 196307070_PIT_NYN |
| Paul Foytack | ANA | -1.16 | 196307072_ANA_TEX |
| Vern Law | PIT | -1.13 | 196307070_PIT_NYN |
| Stan Williams | NYA | -0.93 | 196307072_NYA_CLE |
| Bennie Daniels | TEX | -0.92 | 196307071_ANA_TEX |
Based on accumulated WAA for this season up to 1963-07-11.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 6.08 | Sandy Koufax | 156.3 | LAN |
| +003+ | 5.76 | Dick Ellsworth | 158 | CHN |
| +004+ | 5.45 | Bob Friend | 158.7 | PIT |
| +006+ | 5.25 | Jim O'Toole | 152 | CIN |
| +008+ | 4.71 | Larry Jackson | 152.7 | CHN |
| +009+ | 4.62 | Juan Marichal | 170.3 | SFN |
| +013+ | 3.84 | Juan Pizarro | 132.3 | CHA |
| +019+ | 3.1 | Ray Culp | 137 | PHI |
| +026+ | 2.85 | Denny Lemaster | 128.3 | ATL |
| +029+ | 2.76 | Steve Barber | 142.3 | BAL |
| +034+ | 2.57 | Carl Willey | 119.7 | NYN |
| +036+ | 2.55 | Don Drysdale | 178 | LAN |
| +040+ | 2.47 | Joe Nuxhall | 105 | CIN |
| +039+ | 2.47 | Earl Wilson | 132.7 | BOS |
| +042+ | 2.45 | Don Schwall | 87.7 | PIT |
| +044+ | 2.43 | John Buzhardt | 117.3 | CHA |
| +046+ | 2.4 | Bobby Bolin | 62.3 | SFN |
| +049+ | 2.37 | Whitey Ford | 138 | NYA |
| +050+ | 2.31 | Jack Kralick | 114 | TOT |
| +051+ | 2.3 | Camilo Pascual | 108.7 | MIN |
| +052+ | 2.29 | Ken McBride | 153.3 | ANA |
| +053+ | 2.28 | Warren Spahn | 148 | ATL |
| +056+ | 2.22 | Tom Cheney | 127.7 | TEX |
| +063+ | 1.99 | Jim Bouton | 120.3 | NYA |
| +065+ | 1.95 | Jim Maloney | 137.3 | CIN |
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